I think the headline reads a bit differently. Mexico, in tapping its own deep aquifers is proving it's possible and desirable, is now saying to the US "watch it

I think the headline reads a bit differently. Mexico, in tapping its own deep aquifers is proving it's possible and desirable, is now saying to the US "watch it, that water of yours you are polluting? you might actually want/need to drink from it, and sooner than you'd think"